Capillidium heterosporum (Drechsler) B. Huang & Y. Nie, 2020

Nie, Yong, Yu, De-Shui, Wang, Cheng-Fang, Liu, Xiao-Yong & Huang, Bo, 2020, A taxonomic revision of the genus Conidiobolus (Ancylistaceae, Entomophthorales): four clades including three new genera, MycoKeys 66, pp. 55-81 : 55

Capillidium heterosporum (Drechsler) B. Huang & Y. Nie comb. nov. Figure 2

Conidiobolus heterosporus Drechsler, Am. J. Bot. 40: 107 (1953). Basionym.

= Conidiobolus rugosus Drechsler, Am. J. Bot. 42: 437 (1955).

Specimens examined.

China, Anhui Province, Plant detritus, 8 Nov 2008, C.F. Wang, RCEF 4430.

Description.

Colonies on PDA at 25 °C after 3 d, white, reaching ca. 21 mm in diameter. Mycelia colourless, 5-9 μm wide. Primary conidiophores, colourless, unbranched and producing a single globose conidium with widening upwards, extending to a length of 30-245 μm into the air, 8-17 μm wide. Primary conidia forcibly discharged, colourless, globose to subglobose, measuring 12-37 μm in greatest length and 11-31 μm in total width, including a basal papilla 1.5-5 μm high and 5-12 μm wide. After discharging on to 2% water-agar, similar and smaller secondary conidia arise from primary conidia, 1-6 ellipsoidal secondary conidia (capilliconidia, 10-20 × 12-38 μm) arise from slender conidiophores (50-250 × 2.5-4 μm). Resting spores not observed.

Notes.

The ex-type living culture is ATCC 12941 (United States, Maryland, 18 Mar 1952, Drechsler).

Figures

Figure 2. Capillidium heterosporum a colony on PDA after 3 d at 25 ° C b primary conidiophores bearing primary conidia c primary conidia d, e, f ellipsoidal secondary conidia arising from slender conidiophores g, h production of secondary conidia. Scale bars: 10 mm (a); 20 μm (b, c, d, g, h); 100 μm (e, f).